71 加法 78 等于多少？
71 + 78 = 149
71加法78 等于 149
竖式演算
验算
- 用减法验算：149 − 78 = 71
- 用减法验算：149 − 71 = 78
相关题目
71 + 77 = 148
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70 + 78 = 148
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